Rivet



' RIVET. No. 358,225. Patented Feb. 22, 1887.

WITNESSES INVENTDR I @MQM YERS. Phntu'Lllhognphcr. wasmn mn. n. a

NITED STATES PATENT Fries.

EDWARD L. SIBLEY, OF BENNINGTON, VERMONT.

RIVET.

SPECIFICATION forming part of Letters Patent No. 358,225, dated February22, 1887.

Application filed October 29, 1885. Renewed November 2, 1886. Serial No.217,799.

(No model.)

To aZZ whom, it may concern.-

Be it known that I, EDWARD L. SIBLEY, a resident of Bennington, in thecounty of Bennington and State of Vermont,- have invented certain newand useful Improvements in Rivets; and I do hereby declare that thefollowing is a full, clear, and exact description of the invention, thatwill enable others skilled in the art to which it appertains to make anduse the same, reference being had to the accompanying drawings, and tothe letters of reference marked thereon, which form a part of thisspecification.

Similar letters refer to similar parts in the several figures therein.

My invention relates to improvements in rivets.

The object of my invention is to provide a perforative tubular flangedrivet or fastener,

central section showing the rivet pressed through and headed down uponseveral sheets of paper in position to hold them together. Fig. 4 is ahorizontal section taken at broken line in Fig. 1. Fig. 5 is a sideelevation of pointed tool for forcing the rivet through the sheets ofmaterial to be fastened together. Fig. 6 is aside elevation of the diefor heading down the point of the rivet. Fig. 7 is a top plan view of amodified form of rivet. Fig. 8 is a side elevation of rivet in Fig. 7.Fig. 9

is a plan view of sheet metal stamped out in proper shape to form therivet shown in Figs. 7 and 8.

A. is the rivet, which is hollow or tubular. The tube is closed at theupper end and provided with the perforative point a. The other is open,as shown at j, and provided with the projecting flange b.

I ,When it is desired to force the point of the rivet through aconsiderable number of sheets of paper or other material at one time, asteel rod, 0, provided with point, a; adapted to en ter and fit theinterior of the rivet, and with a suitable handle, as e, andsustaining-flange b, may be employed, in which case the rivet is slippedupon the implement, as shown by dotted lines in Fig.5, when the point ofthe rivet is easily forced through the paper by'the hand, or by a blowfrom a mallet, until the flange b rests against the paper. The implementis then withdrawn and the pointa forced down into the tube, the walls ofthe latter being forced outward to form a retaininghead, as shown inFig. 3. Any smooth-faced hammer will serve for this purpose, though Iprefer a die provided with a central projection, d, as shown in Fig. 6,which forces the pointaof the rivet down farther into the tube, as shownin Fig. 3.

\Vhen the shell of the rivet-tube is very thin, another implement, likethat shown in Fig. 5, except that the point a is cut off at about thedotted line a, is inserted within the rivet to prevent itsshell frombending when the point is headed down.

The cross-sectional form of the rivet shown in Fig. 4 is round; but itmay be square, as shown in Figs. 7 and 8, or of any desired form.

The rivet may be swaged out from a solid piece of metal, or have itstube formed by drilling; or it may be formed from sheet metal. In thelatter case a piece to form the rivet may be stamped out from asheet ofmetal, as shown by dotted lines in Fig. 9, by suitable dies to give theform shown by the solid lines. The

piece so stamped out is easily swaged into the perforate the paper bycutting out a portion thereof.

I am aware that tubular open-end rivets have been provided on one endwith a circular cutting-edge to perforate the paper by cutting out aportion; but such rivets are difficult and expensive to manufacture, andnot adapted to be inserted through the paper by hand.

I do not claim a tubular rivet open at both ends, nor a blank of sheetmetal during its 5 process of construction into such a rivet by drawingthe blank into a tube and afterward opening its closed end by a pointedtool.

Vhat I claim as new, and desire to secure by Letters Patent, is-

IO 1. As a new article of manufacture, a tubular rivet closed at itsperforative end and open at the other end, the open end being providedwith a projecting retaining-flange, substantially as described, and forthe purposes set 15 forth.

2. As an improved article of manufacture, a hollow sheet-metal rivetclosed at its perforative end and open at the other end, the open endbeing provided with asectional retainingflange, substantially asdescribed, and for the 20 purposes set forth.

In testimony whereof I have hereunto set my hand this 27th day ofOctober, 1885.

G130. A. MosHER, W. H. I'IOLLIS'LER, Jr.

